Geometrically necessary dislocations, hardening, and a simple gradient theory of crystal plasticity

Amit Acharya; J. L. Bassani; A. Beaudoin

doi:10.1016/S1359-6462(02)00337-8

Geometrically necessary dislocations, hardening, and a simple gradient theory of crystal plasticity

Amit Acharya, J. L. Bassani, A. Beaudoin

Mechanical Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Geometrically necessary dislocations (GNDs) and incompatible lattice deformations are directly related and characterized by a gradient of the elastic distortion. This measure of GND density can play a natural role in non-local theories of plasticity. Issues concerning hardening and boundary conditions are addressed in the setting of a simple theory.

Original language	English (US)
Pages (from-to)	167-172
Number of pages	6
Journal	Scripta Materialia
Volume	48
Issue number	2
DOIs	https://doi.org/10.1016/S1359-6462(02)00337-8
State	Published - Jan 2003

Keywords

Boundary conditions
Crystal plasticity
Gradient plasticity
Lattice incompatibility
Work hardening

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/S1359-6462(02)00337-8

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abstract = "Geometrically necessary dislocations (GNDs) and incompatible lattice deformations are directly related and characterized by a gradient of the elastic distortion. This measure of GND density can play a natural role in non-local theories of plasticity. Issues concerning hardening and boundary conditions are addressed in the setting of a simple theory.",

keywords = "Boundary conditions, Crystal plasticity, Gradient plasticity, Lattice incompatibility, Work hardening",

author = "Amit Acharya and Bassani, {J. L.} and A. Beaudoin",

note = "Funding Information: AA and AJB received support for this work under US Department of Energy subcontract B341494. JLB received support under NSF grant no. CMS99-00131 and the Department of Energy ASCI program through LLNL.",

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AU - Acharya, Amit

AU - Bassani, J. L.

AU - Beaudoin, A.

N1 - Funding Information: AA and AJB received support for this work under US Department of Energy subcontract B341494. JLB received support under NSF grant no. CMS99-00131 and the Department of Energy ASCI program through LLNL.

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N2 - Geometrically necessary dislocations (GNDs) and incompatible lattice deformations are directly related and characterized by a gradient of the elastic distortion. This measure of GND density can play a natural role in non-local theories of plasticity. Issues concerning hardening and boundary conditions are addressed in the setting of a simple theory.

AB - Geometrically necessary dislocations (GNDs) and incompatible lattice deformations are directly related and characterized by a gradient of the elastic distortion. This measure of GND density can play a natural role in non-local theories of plasticity. Issues concerning hardening and boundary conditions are addressed in the setting of a simple theory.

KW - Boundary conditions

KW - Crystal plasticity

KW - Gradient plasticity

KW - Lattice incompatibility

KW - Work hardening

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Geometrically necessary dislocations, hardening, and a simple gradient theory of crystal plasticity

Abstract

Keywords

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